Revision 248e8da6cc845fb4c7765a3719ebc653ace60e4f authored by Steven Johnson on 20 April 2022, 17:41:49 UTC, committed by Steven Johnson on 20 April 2022, 17:41:49 UTC
Error.cpp
#include "Error.h"
#include "Introspection.h"
#include "Util.h" // for get_env_variable
#include <csignal>
#ifdef _MSC_VER
#include <io.h>
inline int isatty(int fd) {
return _isatty(fd);
}
#else
#include <unistd.h>
#endif
namespace Halide {
namespace {
CompileTimeErrorReporter *custom_error_reporter = nullptr;
} // namespace
void set_custom_compile_time_error_reporter(CompileTimeErrorReporter *error_reporter) {
custom_error_reporter = error_reporter;
}
bool exceptions_enabled() {
#ifdef HALIDE_WITH_EXCEPTIONS
return true;
#else
return false;
#endif
}
Error::Error(const std::string &msg)
: std::runtime_error(msg) {
}
CompileError::CompileError(const std::string &msg)
: Error(msg) {
}
RuntimeError::RuntimeError(const std::string &msg)
: Error(msg) {
}
InternalError::InternalError(const std::string &msg)
: Error(msg) {
}
namespace Internal {
// Force the classes to exist, even if exceptions are off
namespace {
CompileError _compile_error("");
RuntimeError _runtime_error("");
InternalError _internal_error("");
} // namespace
ErrorReport::ErrorReport(const char *file, int line, const char *condition_string, int flags)
: flags(flags) {
// Note that we deliberately try to put the entire message into a single line
// (aside from newlines inserted by user code) to make it easy to filter
// specific warnings or messages via (e.g.) grep.... unless we are likely to be
// outputting to a proper terminal, in which case newlines are used to improve readability.
#if defined(HALIDE_WITH_EXCEPTIONS)
const bool use_newlines = false;
#else
const bool use_newlines = (custom_error_reporter == nullptr) && isatty(2);
#endif
const char sep = use_newlines ? '\n' : ' ';
const std::string &source_loc = Introspection::get_source_location();
const char *what = (flags & Warning) ? "Warning" : "Error";
if (flags & User) {
// Only mention where inside of libHalide the error tripped if we have debug level > 0
debug(1) << "User error triggered at " << file << ":" << line << "\n";
if (condition_string) {
debug(1) << "Condition failed: " << condition_string << "\n";
}
msg << what << ":";
if (!source_loc.empty()) {
msg << " (at " << source_loc << ")";
}
msg << sep;
} else {
msg << "Internal " << what << " at " << file << ":" << line;
if (source_loc.empty()) {
msg << " triggered by user code at " << source_loc << ":";
}
msg << sep;
if (condition_string) {
msg << "Condition failed: " << condition_string << ":" << sep;
}
}
}
ErrorReport::~ErrorReport()
#if __cplusplus >= 201100 || _MSC_VER >= 1900
noexcept(false)
#endif
{
if (!msg.str().empty() && msg.str().back() != '\n') {
msg << "\n";
}
if (custom_error_reporter != nullptr) {
if (flags & Warning) {
custom_error_reporter->warning(msg.str().c_str());
return;
} else {
custom_error_reporter->error(msg.str().c_str());
// error() should not have returned to us, but just in case
// it does, make sure we don't continue.
abort();
}
}
// TODO: Add an option to error out on warnings too
if (flags & Warning) {
std::cerr << msg.str();
return;
}
#ifdef HALIDE_WITH_EXCEPTIONS
if (std::uncaught_exceptions() > 0) {
// This should never happen - evaluating one of the arguments
// to the error message would have to throw an
// exception. Nonetheless, in case it does, preserve the
// exception already in flight and suppress this one.
return;
} else if (flags & Runtime) {
throw RuntimeError(msg.str());
} else if (flags & User) {
throw CompileError(msg.str());
} else {
throw InternalError(msg.str());
}
#else
std::cerr << msg.str();
abort();
#endif
}
} // namespace Internal
} // namespace Halide
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